对象与json串之间的转换

注意引用：System.Runtime.Serialization，System.ServiceModel.Web
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;

namespace CrjIIOfflineAccept.CrjIITools
{
    public class JsonTools
    {
        // 从一个对象信息生成Json串
        public static string ObjectToJson(object obj)
        {
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
            MemoryStream stream = new MemoryStream();
            serializer.WriteObject(stream, obj);
            byte[] dataBytes = new byte[stream.Length];
            stream.Position = 0;
            stream.Read(dataBytes, 0, (int)stream.Length);
            String dataString = Encoding.UTF8.GetString(dataBytes);
            return dataString;
        }
        // 从一个Json串生成对象信息
        public static object JsonToObject(string jsonString, object obj)
        {
            DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
            MemoryStream mStream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
            obj = serializer.ReadObject(mStream);
            return obj;
        }
    }
}